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1. Modal Distortion

   Linked via "Modal Dispersion Compensation (MDC)"

   Modal Dispersion Compensation (MDC)
   For multimode systems where MD is inherent due to design (e.g., high-bandwidth LAN backbones), a technique called Modal Dispersion Compensation (MDC) is employed. This involves intentionally introducing a compensating structure—often a specialized, highly tapered section of fiber known as a "temporal flattener"—that exhibits negative modal delay. This structure is designed such that the slight modal spread accumulated in the main transmission line is precisely cancelled by the opposite spread occurring i…